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Mirepoix is a foundational aromatic base used in French cooking, traditionally made from diced onions, carrots, and celery sautéed in butter or oil. It serves as the flavor starting point for countless soups, stews, sauces, and braises, providing a deep, savory backbone to dishes. The name originates from the 18th-century Duke of Mirepoix, a French aristocrat.
Mirepoix itself is low in calories, fat, and protein, primarily offering dietary fiber, vitamins A and C, and minerals like potassium from the vegetables. A typical serving used as a cooking base might contain around 50-80 calories, depending on the amount of fat used for sautéing.
Culturally, mirepoix is considered the 'holy trinity' of French cuisine, similar to the 'sofrito' in Italian or Spanish cooking, showcasing how a simple combination of vegetables can build complex flavors. Nutritionally, it's a smart way to add volume, flavor, and nutrients to dishes while often reducing the need for excessive salt or fat.